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// RUN: %target-typecheck-verify-swift
// FIXME: Should go into the standard library.
public extension _ObjectiveCBridgeable {
static func _unconditionallyBridgeFromObjectiveC(_ source: _ObjectiveCType?)
-> Self {
var result: Self?
_forceBridgeFromObjectiveC(source!, result: &result)
return result!
}
}
class V {}
class U : V {}
class T : U {}
var v = V()
var u = U()
var t = T()
var va = [v]
var ua = [u]
var ta = [t]
va = ta
var va2: ([V])? = va as [V]
var v2: V = va2![0]
var ua2: ([U])? = va as? [U]
var u2: U = ua2![0]
var ta2: ([T])? = va as? [T]
var t2: T = ta2![0]
// Check downcasts that require bridging.
class A {
var x = 0
}
struct B : _ObjectiveCBridgeable {
func _bridgeToObjectiveC() -> A {
return A()
}
static func _forceBridgeFromObjectiveC(
_ x: A,
result: inout B?
) {
}
static func _conditionallyBridgeFromObjectiveC(
_ x: A,
result: inout B?
) -> Bool {
return true
}
}
func testBridgedDowncastAnyObject(_ arr: [AnyObject], arrOpt: [AnyObject]?,
arrIUO: [AnyObject]!) {
var b = B()
if let bArr = arr as? [B] {
b = bArr[0]
}
if let bArr = arrOpt as? [B] {
b = bArr[0]
}
if let bArr = arrIUO as? [B] {
b = bArr[0]
}
_ = b
}
func testBridgedIsAnyObject(_ arr: [AnyObject], arrOpt: [AnyObject]?,
arrIUO: [AnyObject]!) -> Bool {
let b = B()
if arr is [B] { return arr is [B] }
if arrOpt is [B] { return arrOpt is [B] }
if arrIUO is [B] { return arrIUO is [B] }
_ = b
return false
}
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